Document is current

Article History

Received: 10 November 2017

Accepted: 6 February 2018

First Online: 17 February 2018

Compliance with ethical standards

:

: QoLISSY is a joint initiative between Pfizer Limited and the University Medical Center Hamburg-Eppendorf. Copyright Pfizer Limited all rights reserved. The European QoLISSY instrument, together with comprehensive information of its development and validation process is published in the QoLISSY’s User’s Manual (Pabst Science Publishers, Lengerich, 2013). The Manual, which is available upon request, includes QoLISSY child and parent forms, as well as scoring information (ExternalRef removed).

: This study was sponsored by Pfizer, Inc. RS, JB, MB, and JQ received research funding for the conduct of the study. The authors received no financial support for the development of the manuscript.

: The study has been approved by the appropriate ethics committee and has, therefore, been performed in accordance with the ethical standard laid down in the 1964 Declaration of Helsinki and its later amendments.

: Informed consent was obtained from all individual participants included in the study.